Grinding noise when engaging autostop? '08 Yukon Hybrid

thechauffeur

This is a new noise to add to my collection! I drive a 2008 Yukon Hybrid which, by the way, is a giant turd. So, as of today every time the vehicle switches from engine power to auto-stop, it makes a horrible grinding noise. It sounds like something is dragging underneath the vehicle, except it happens when the car isn't moving at all. I recorded it just now in my driveway, and will gladly share if anyone thinks it would help.